Have you ever played the game Plague Inc? If not, it's basically a simulator game where you try to infect the entire planet Earth with a custom-made virus, the end-goal being the end of all human existence. It's an ambitious game for certain, one that takes a certain finesse to play well, but fun even if you don't win a given stage.
In the spirit of bringing every game ever to Minecraft, McMakistein has recreated Plague Inc for you to play! While not a point-for-point recreation (adding every country in the world would be time-consuming at best), it is nonetheless an amazing project, built using only vanilla parts. The video includes an explanation of the redstone that powers this beast. Enjoy!